00:01
I'm going to be looking at a four term expression.
00:27
So the first thing you need to do is recognize how many terms we have.
00:33
One, two, three, and i'll use a wavy line to indicate the fourth one.
00:47
So we need to look at 14, 7, negative 21, and 42.
00:54
And those are all divisible by 7.
01:00
So i can say that the largest number divides all four of those coefficients is seven.
01:05
The a's, we have three here in red, two in green, five in blue, one in wavy.
01:12
The most that we can divide out is just one.
01:17
First term in red, we have two factors of b.
01:20
Green we have one.
01:22
Blue we have three, and wavy red we have four.
01:27
So the minimum is what we can divide out of all of them, which is b, just one of them...